Unverified90% confidenceDecision RuleTime unknown
支持多星座定位(GPS+北斗+GLONASS+Galileo)的设备在城市高楼峡谷、隧道口的定位精度明显优于单GPS,首次定位时间可缩短至10秒内;单GPS设备在遮挡环境下偏移可达10-30米
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